实现open file cache

pkg/serverconfigs/http_cache_storage_file.go

@@ -1,11 +1,19 @@
 package serverconfigs
 
-// 文件缓存存储策略
+// HTTPFileCacheStorage 文件缓存存储策略
 type HTTPFileCacheStorage struct {
 	Dir          string           `yaml:"dir" json:"dir"`                   // 目录
 	MemoryPolicy *HTTPCachePolicy `yaml:"memoryPolicy" json:"memoryPolicy"` // 内存二级缓存
+
+	OpenFileCache *OpenFileCacheConfig `yaml:"openFileCache" json:"openFileCache"` // open file cache配置
 }
 
 func (this *HTTPFileCacheStorage) Init() error {
+	if this.OpenFileCache != nil {
+		err := this.OpenFileCache.Init()
+		if err != nil {
+			return err
+		}
+	}
 	return nil
 }